I think, the problem is that pilots are not objectives in their point of view.
Personnally I don't care much what will happen in the futur, but for sure, you bet, there will be pilotless planes.
first of all, pilots are not even engineers to give an opinion about what a technology can do or can not do...science can go very far, more than we know. Unless you are a scientist.
2) human being, in all cases, always like challenge. We always want to go further and create new technology. It's an exponential curve.
As many doubt about it , that pilotless planes are difficult to make, yes maybe. In that case, it means it's a challenge. So you can be sure that engineers want to win this challenge.
A challenge is what makes us motivated. Keep this in mind.
It seems impossible for you now. But in the futur it will not. Your kids will tell you that.
It is not honest to think that such things won't happen. As long as we have brain, then, we will still invent new technology, better than today.